JP5690501B2 - Sample analyzer - Google Patents

Description

  The present invention relates to a sample analyzer, and more particularly to a sample analyzer equipped with a reagent container attached with an electronic tag in which reagent information is recorded.

  Conventionally, a sample analyzer equipped with a reagent container with an electronic tag in which reagent information is recorded is known (see, for example, Patent Document 1).

  Patent Document 1 discloses a reagent container holding unit that holds a plurality of reagent containers with wireless IC tags on which reagent information is recorded, an antenna unit that receives radio waves from a wireless IC tag, and a wireless IC tag. An automatic analyzer including an information reading / recording unit that receives a returned radio wave from an antenna unit and a sensor that detects the presence or absence of a reagent container at a front position of the antenna unit is disclosed. The automatic analyzer according to Patent Document 1 performs a reagent information reading operation when the reagent container is located at the front position of the antenna section, and information is obtained when the reagent container is not located at the front position of the antenna section. A signal is not transmitted from the reading / recording unit to the antenna unit, and the reagent information reading operation is not performed.

JP 2009-210444 A

  In an analyzer in which a plurality of reagent containers are held side by side, there is a possibility that reagent information may be read from a plurality of electronic tags in one reading operation, and in this case, which reagent information is to be read. It becomes difficult to determine whether the electronic tag has been read.

  For example, in the automatic analyzer described in Patent Document 1, when reagent information is read from the wireless IC tag of another reagent container adjacent to the reagent container located at the front position of the antenna section, which reagent information is stored in the antenna section. It is difficult to determine whether or not it is read from the electronic tag of the reagent container located at the front position. In order to avoid this, it is necessary to ensure a large arrangement interval between the reagent containers, and there is a problem that the apparatus main body is enlarged correspondingly.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to provide a sample analyzer capable of suppressing an increase in the size of the apparatus main body. is there.

Means for Solving the Problems and Effects of the Invention

In order to achieve the above object, a sample analyzer according to a first aspect of the present invention is a sample analyzer that analyzes a sample using a reagent in a reagent container, and is an electronic device in which reagent information related to the reagent is recorded. A reagent container holding unit that holds a plurality of reagent containers with tags attached thereto, an antenna unit for transmitting radio waves to the electronic tag, and a radio wave transmitted between the electronic tag and the antenna unit and transmitted from the antenna unit A restricting member that restricts the range of the metal member, and the restricting member has a gap for allowing radio waves transmitted from the antenna portion to pass therethrough and a metal member provided so as to block between the electronic tag and the antenna portion. wherein the gap is Ri Do from the notches formed so as to extend to the end of the metal member, a metal member, among a plurality of reagent containers, the antenna portion and right opposite the electronic tag and the antenna portion of a single reagent container Between the electronic tag of the other reagent container that does not face the antenna part and the antenna part, and the reagent container holding part and the antenna part. A drive unit that moves at least one of the restriction member, and the position of the restriction member is fixed with respect to the antenna unit .

In the sample analyzer according to the first aspect of the present invention, as described above, the radio wave transmitted from the antenna unit is interposed between the electronic tag attached to the reagent container held in the reagent container holding unit and the antenna unit. By providing a limiting member that limits the range, it is possible to prevent erroneous reading of reagent information recorded on an electronic tag that does not require reading of reagent information. Therefore, it is possible to suppress erroneous reading of reagent information recorded on an electronic tag that does not need to be read without securing a large arrangement interval between adjacent reagent containers. An increase in size of the main body can be suppressed. In addition, since unnecessary radio waves can be absorbed in portions other than the gap between the metal members, the range of radio waves transmitted from the antenna unit can be easily limited to a desired range. In addition, when the gap is completely surrounded by the metal member, an eddy current is generated in the metal member around the gap by the radio wave passing through the gap. Due to this eddy current, the output of the radio wave is weakened. On the other hand, by forming the gap so as to extend to the end portion of the metal member, the gap can be configured not to be surrounded by the metal member, so that generation of eddy current in the metal member can be suppressed. . Thereby, it can suppress that the output of the electromagnetic wave which passes a clearance gap weakens. Further, by moving at least one of the reagent container holding part and the antenna part, the reagent information of the electronic tag attached to each of the plurality of reagent containers can be reliably read using the antenna part. Further, even when the antenna unit is moved, the relative positional relationship between the restricting member and the antenna unit does not change, and it is not necessary to align each other. The reagent information of the electronic tag attached to each can be read more reliably. Moreover, since it is not necessary to provide a limiting member for every several reagent container, the increase in a number of parts can be suppressed by that much.

  In the sample analyzer in which the gap extends to the end of the metal member, the vertical length of the gap is preferably larger than the horizontal length of the gap. With this configuration, it is possible to prevent erroneous reading of reagent information recorded on an electronic tag that does not require reading of reagent information in a state where the reagent containers are arranged adjacent to each other in the horizontal direction. can do.

In test body analyzer according to the first aspect, preferably, the antenna unit includes an antenna substrate for performing transmission of radio waves, and a antenna holding portion for holding the antenna substrate, limiting member, the antenna holding portion It is attached. If comprised in this way, since a limiting member can be attached and fixed to an antenna holding | maintenance part, the relative positional relationship of a limiting member and an antenna part can be maintained reliably.

In this case , preferably, the antenna substrate further includes a storage unit that stores the reagent container holding unit and the antenna unit, and a cooling unit for cooling the reagent, and the antenna holding unit is capable of transmitting radio waves in the antenna substrate. It is arranged to cover. If comprised in this way, when cooling a reagent by a cooling part, it can suppress that the water droplet by dew condensation adheres to an antenna board | substrate by the antenna holding part which covers an antenna board | substrate. Thereby, it is possible to suppress occurrence of a short circuit in a circuit constituting the antenna substrate due to water droplets attached to the antenna substrate.

  In the sample analyzer according to the first aspect described above, preferably, the plurality of reagent containers include a plurality of first reagent containers attached with a first electronic tag and a plurality of second reagent containers attached with a second electronic tag. The reagent container holding part includes a first reagent container holding part for holding a plurality of first reagent containers and a second reagent container holding part for holding a plurality of second reagent containers, and the antenna part includes a first A first antenna unit for transmitting radio waves to the electronic tag and a second antenna unit for transmitting radio waves to the second electronic tag, and the restricting member is between the first electronic tag and the first antenna unit. And a second limiting member provided between the second electronic tag and the second antenna unit. If comprised in this way, the reagent information recorded on the some electronic tag can be acquired in a shorter time.

  In the sample analyzer according to the first aspect, preferably, the plurality of reagent containers include a first reagent container to which a first electronic tag is attached and a second reagent container to which a second electronic tag is attached, The container holding part includes a first reagent container holding part for holding the first reagent container and a second reagent container holding part for holding the second reagent container, and the antenna part includes the first reagent container holding part and the second reagent. The limiting member is disposed between the container holding part and the restriction member is provided between at least one of the first electronic tag and the antenna part and between the second electronic tag and the antenna part. If comprised in this way, since the antenna part for reading the reagent information recorded on the 1st electronic tag and the 2nd electronic tag can be shared, it can control that the number of parts increases correspondingly. it can.

  In this case, preferably, the first reagent container holding part is formed in a substantially annular shape when seen in a plan view, holds a plurality of first reagent containers, and the second reagent container holding part is seen in a plan view. The second reagent container is formed in a substantially annular shape on the inner peripheral side of the first reagent container holding part, holds a plurality of second reagent containers, and the limiting member is a second attached to the second reagent container of the second reagent container holding part. It is provided between the electronic tag and the antenna portion. If comprised in this way, since the 2nd reagent container holding | maintenance part formed in a substantially annular | circular shape at the inner peripheral side of a 1st reagent container holding | maintenance part has the outer periphery length smaller than a 1st reagent container holding | maintenance part, a plurality of The second reagent containers are more easily arranged closer to each other than the plurality of first reagent containers. Even in this case, it is possible to prevent the radio wave transmitted from the antenna unit from erroneously reaching the electronic tag that does not need to read the reagent information.

It is the perspective view which showed the whole structure of the immunological analyzer by 1st Embodiment of this invention. It is the top view which showed the whole structure of the immune analyzer by 1st Embodiment shown in FIG. It is a block diagram for demonstrating the structure of the immune analyzer by 1st Embodiment shown in FIG. It is the perspective view which showed the inside of the reagent installation part of the immune analyzer by 1st Embodiment shown in FIG. It is the top view which showed the inside of the reagent installation part of the immune analyzer by 1st Embodiment shown in FIG. FIG. 3 is an enlarged plan view showing a state when an IC tag of an R3 reagent container of the reagent installing unit according to the first embodiment shown in FIG. 1 is read. FIG. 3 is an enlarged plan view showing a state when an IC tag of an R2 reagent container of the reagent installing unit according to the first embodiment shown in FIG. 1 is read. It is the perspective view which showed the inner side antenna part of the reagent installation part by 1st Embodiment shown in FIG. It is the front view which showed the inner side antenna part of the reagent installation part by 1st Embodiment shown in FIG. It is the rear view which showed the inner side antenna part of the reagent installation part by 1st Embodiment shown in FIG. It is sectional drawing which showed the inner side antenna part of the reagent installation part along the 400-400 line of FIG. It is the top view which showed the antenna board | substrate of the inner side antenna part by 1st Embodiment shown in FIG. It is the perspective view which showed the outer side antenna part of the reagent installation part by 1st Embodiment shown in FIG. It is the front view which showed the outer side antenna part of the reagent installation part by 1st Embodiment shown in FIG. It is the rear view which showed the outer side antenna part of the reagent installation part by 1st Embodiment shown in FIG. It is sectional drawing which showed the outer side antenna part of the reagent installation part along the 500-500 line | wire of FIG. It is the top view which showed the antenna board | substrate of the outer side antenna part by 1st Embodiment shown in FIG. It is the side view which showed R3 reagent container of the reagent installation part by 1st Embodiment shown in FIG. It is the side view which showed R2 reagent container of the reagent installation part by 1st Embodiment shown in FIG. It is a flowchart which shows the measurement operation | movement of the immune analyzer by 1st Embodiment shown in FIG. It is a flowchart which shows the reagent information reading process of the immune analyzer by 1st Embodiment shown in FIG. 6 is a flowchart showing a reagent aspirating / reagent information writing process of the immune analyzer according to the first embodiment shown in FIG. 1; It is a block diagram for demonstrating the structure of the immune analyzer by 2nd Embodiment of this invention. It is the top view which showed the inside of the reagent installation part of the immune analyzer by 2nd Embodiment shown in FIG. FIG. 24 is an enlarged plan view showing a state when the IC tag according to the second embodiment shown in FIG. 23 is read. It is the perspective view which showed the antenna part of the reagent installation part by 2nd Embodiment shown in FIG. It is the front view which showed the antenna part of the reagent installation part by 2nd Embodiment shown in FIG. It is a flowchart which shows the reagent information reading process of the immune analyzer by 2nd Embodiment shown in FIG. It is a flowchart which shows the reagent aspiration / reagent information writing process of the immune analyzer by 2nd Embodiment shown in FIG.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

(First embodiment)
First, with reference to FIGS. 1-19, the structure of the immune analyzer 1 by 1st Embodiment of this invention is demonstrated.

  The immunological analyzer 1 according to the first embodiment of the present invention uses a specimen such as blood to examine various items such as proteins, tumor markers, and thyroid hormones related to infections (hepatitis B, hepatitis C, etc.). It is a device for performing.

  This immunoanalyzer 1 is an apparatus for quantitatively measuring or qualitatively measuring antigens and antibodies contained in a specimen (blood sample) such as blood to be measured. When quantitatively measuring the antigen contained in the specimen, the immunoanalyzer 1 binds the capture particle (R1 reagent) bound to the antigen contained in the specimen to the magnetic particles (R2 reagent) and then binds (Bound) ) The attracted antigen, capture antibody and magnetic particles are attracted to a magnet (not shown) of a primary BF (Bound Free) separation unit 11 to remove the R1 reagent containing the unreacted (Free) capture antibody. Has been. The immunoassay device 1 binds the antigen bound with the magnetic particles and the labeled antibody (R3 reagent), and then binds the bound magnetic particles, the antigen, and the labeled antibody to the magnet (secondary BF separation unit 12). The R3 reagent containing the unreacted (Free) labeled antibody is removed by pulling it to (not shown). Furthermore, after adding a dispersion (R4 reagent) and a luminescent substrate (R5 reagent) that emits light during the reaction with the labeled antibody, the amount of luminescence generated by the reaction between the labeled antibody and the luminescent substrate is measured. Through these steps, the antigen contained in the specimen that binds to the labeled antibody is quantitatively measured.

  As shown in FIGS. 1 and 2, the immune analyzer 1 includes a measurement mechanism unit 2, a sample transport unit (sampler) 3 disposed adjacent to the measurement mechanism unit 2, and a measurement mechanism unit 2. And a control device 4 formed of an electrically connected PC (personal computer).

  The sample transport unit 3 is configured to be capable of transporting a rack on which a plurality of test tubes (not shown) containing samples are placed. The sample transport unit 3 is configured to transport a test tube containing a sample to a sample aspirating position by the sample dispensing arm 5.

  As shown in FIG. 3, the control device 4 includes a CPU 4a, a display unit 4b, an input unit 4c, and a storage unit 4d. The CPU 4a causes the measurement mechanism unit 2 (CPU 2a to be described later) to perform measurement based on measurement conditions input by the user using the input unit 4c, and analyzes the measurement result obtained by the measurement mechanism unit 2, The analysis result is displayed on the display unit 4b. The storage unit 4d is composed of a hard disk, and the reagent information and position information of each of the R2 reagent container 24, R3 reagent container 25 and R2 reagent container 26, which will be described later, are stored separately. The storage unit 4d will be described in detail later.

  As shown in FIG. 2, the measurement mechanism unit 2 includes a sample dispensing arm 5, an R1 reagent dispensing arm 6, an R2 reagent dispensing arm 7, an R3 reagent dispensing arm 8, and a reaction unit 9. , Cuvette supply unit 10, primary BF separation unit 11, secondary BF separation unit 12, pipette tip supply unit 13, detection unit 14, R4 / R5 reagent supply unit 15, reagent installation unit 16, An RFID (Radio Frequency IDentification) module 17 is included.

  Further, as shown in FIG. 3, each mechanism unit (such as various dispensing arms and the reaction unit 9) in the measurement mechanism unit 2 is controlled by a CPU 2 a provided in the measurement mechanism unit 2. The sample transport unit 3 is also configured to be controlled by the CPU 2a. Further, the measurement mechanism unit 2 is provided with a storage unit 2b, and the storage unit 2b stores a control program for causing the CPU 2a to perform operation control of each mechanism unit of the measurement mechanism unit 2. Based on this control program, the CPU 2a is configured to perform a reagent information reading process and a reagent aspirating / reagent aspirating / reagent information writing process which will be described later.

  As shown in FIG. 2, the cuvette supply unit 10 is configured to store a plurality of cuvettes (not shown) and has a function of sequentially supplying cuvettes one by one to the sample discharge position by the sample dispensing arm 5. Yes.

  The R1 reagent dispensing arm 6 is configured to aspirate the R1 reagent installed in the reagent installing unit 16 and dispense (discharge) the aspirated R1 reagent into the cuvette placed at the sample discharge position. The R1 reagent dispensing arm 6 has a function of transferring the cuvette placed at the sample discharge position to a reaction unit 9 by a catcher (not shown).

  The pipette tip supply unit 13 has a function of conveying a plurality of inserted pipette tips (not shown) one by one to the tip mounting position by the sample dispensing arm 5. The pipette tip is attached to the pipette tip of the sample dispensing arm 5 at the tip mounting position.

  After the pipette tip is mounted at the tip mounting position, the sample dispensing arm 5 sucks the sample in the test tube transported to the sample suction position by the sample transporting section 3, and the R1 reagent dispensing arm 6 dispenses the R1 reagent. The sample has a function of dispensing (discharging) the sample into the cuvette at the sample discharge position.

  The R2 reagent dispensing arm 7 has a function of aspirating the R2 reagent installed in the reagent installation unit 16. The R2 reagent dispensing arm 7 is configured to dispense (discharge) the R2 reagent sucked into the cuvette containing the R1 reagent and the specimen.

  The reaction unit 9 is formed in a substantially annular shape so as to surround the periphery of the reagent installation unit 16 having a substantially circular shape when seen in a plan view. Further, the reaction unit 9 is configured to be rotatable in the clockwise direction, and has a function of moving the cuvette held in the cuvette holding unit 9a to each processing position where various processes (reagent dispensing, etc.) are performed. Have.

  The primary BF separation unit 11 transfers the cuvette containing the specimen, R1 reagent, and R2 reagent from the reaction unit 9 to the primary BF separation unit 11 by a catcher (not shown), and then unreacted R1 reagent (from the sample in the cuvette ( (Unnecessary component) and magnetic particles are separated (B / F separation).

  The R3 reagent dispensing arm 8 has a function of aspirating the R3 reagent installed in the reagent installation unit 16. Further, the R3 reagent dispensing arm 8 moves the sucked R3 reagent when the cuvette containing the sample after the B / F separation by the primary BF separation unit 11 is transferred from the primary BF separation unit 11 to the reaction unit 9. It is configured to dispense (discharge) the cuvette.

  The secondary BF separation unit 12 transfers the cuvette containing the sample after the B / F separation by the primary BF separation unit 11 and the R3 reagent from the reaction unit 9 to the secondary BF separation unit 12 by a catcher (not shown), and then cuvettes. An unreacted R3 reagent (unnecessary component) and magnetic particles are separated from the inner sample.

  The R4 / R5 reagent supply unit 15 is configured so as to sequentially dispense the R4 reagent and the R5 reagent into a cuvette containing the sample after the B / F separation by the secondary BF separation unit 12 by a tube (not shown). .

  The detection unit 14 includes a photomultiplier tube (Photo Multiplier Tube) to obtain light generated in the reaction process between the labeled antibody that binds to the antigen of the sample that has undergone predetermined processing and the luminescent substrate. It is provided for measuring the amount of antigen to be detected.

  As shown in FIG. 2, the reagent installing unit 16 includes a housing 16a (see FIG. 4) having a substantially cylindrical shape, a lid portion 16b disposed so as to cover the housing 16a from above, and a lid portion 16b. And an opening / closing portion 16c that is opened and closed when the user replaces the R1 reagent container 24, the R3 reagent container 25, and the R2 reagent container 26, which will be described later. In addition, an openable / closable window (not shown) is formed on the upper surface of the lid 16b corresponding to the R1 reagent, R2 reagent, and R3 reagent suction positions. The R1 reagent, R2 reagent, and R3 reagent are aspirated by the R1 reagent dispensing arm 6, the R2 reagent dispensing arm 7, and the R3 reagent dispensing arm 8, respectively, through this window. The housing 16a and the lid portion 16b constitute the “housing portion” of the present invention.

  4 to 7, the housing 16a of the reagent installing unit 16 is provided with an R1 / R3 installing unit 18, an R2 installing unit 19, an inner antenna unit 20, and an outer antenna unit 21. It has been. Specifically, as shown in FIG. 5, the R1 / R3 installation portion 18 formed in a substantially annular shape having a center O that is substantially the same as the center O of the housing 16 a in plan view, and the housing 16 a. An R2 installation portion 19 formed in a substantially annular shape having a center O that is substantially the same as the center O is disposed inside the housing 16a. Further, the R1 / R3 installation portion 18 is provided on the inner peripheral side (center O side) of the R2 installation portion 19. Further, the housing 16a has a notch 116a formed by cutting a part of the side wall along the vertical direction (Z direction in FIG. 4).

  The reagent installing unit 16 includes an inner rotation driving unit 16d (see FIG. 3) for rotating the R1 / R3 installing unit 18 in the horizontal direction (arrow C1 direction and arrow C2 direction) with the center O as the center of rotation. An outer rotation drive unit 16e (see FIG. 3) is provided for rotating the R2 installation unit 19 in the horizontal direction (arrow D1 direction and arrow D2 direction) with the center O as the rotation center. Further, the inner rotation driving unit 16d and the outer rotation driving unit 16e are configured such that driving is individually controlled by the CPU 2a. A fan 16f and a Peltier element 16g (see FIG. 3) for cooling the R1 reagent, the R2 reagent, and the R3 reagent are provided in the vicinity of the center O at the bottom of the housing 16a. This cooling may cause condensation in the reagent installing unit 16.

  Moreover, as shown in FIGS. 8-11, the inner side antenna part 20 contains the antenna board | substrate 20a, the board | substrate attachment part 20b, and the cover member 20c. Moreover, both the board attachment portion 20b and the lid member 20c are made of a resin capable of transmitting radio waves.

  As shown in FIG. 12, the antenna substrate 20a is configured by forming a coiled antenna wiring 120a on the surface (see FIG. 11) of the plate-shaped substrate on the arrow X1 direction side. It is configured to be able to transmit and receive radio waves via the antenna wiring 120a. A pair of screw holes 220a into which a pair of screws 20g (see FIG. 11) described later is inserted is formed near the center of the antenna substrate 20a. Further, the coiled antenna wiring 120a is formed so as to surround the pair of screw holes 220a.

  Further, as shown in FIG. 6, the antenna substrate 20a is disposed inside the substrate attachment portion 20b so that the surface of the antenna substrate 20a on the arrow X1 direction side faces the R1 / R3 installation portion 18 side. Thereby, the antenna substrate 20a is configured to be able to transmit the reading radio wave and the writing radio wave toward the R1 / R3 installation unit 18 side. The antenna substrate 20a is connected to an antenna switching substrate 17c (see FIG. 3) described later of the RFID module 17.

  As shown in FIGS. 10 and 11, the board mounting portion 20b includes a substantially rectangular flat surface portion 20d, a wall portion 20e extending from the flat surface portion 20d in the arrow X2 direction (see FIG. 11), and an arrow of the flat surface portion 20d. A fixing portion 20f extending in the arrow X2 direction from the lower end portion on the Z2 direction side is formed. The flat surface portion 20d is formed to extend in the vertical direction (Z direction) on the arrow X1 direction side (see FIG. 11).

  As shown in FIG. 10, the wall portion 20e is formed in a substantially rectangular frame shape when seen in a plan view. As shown in FIG. 11, the antenna substrate 20a is fixed to the surface surrounded by the wall portion 20e on the flat surface portion 20d on the arrow X2 direction side by a pair of screws 20g and nuts 20h. Thus, the antenna substrate 20a is fixed in the space surrounded by the wall portion 20e. The antenna substrate 20a is configured so as not to contact the flat surface portion 20d except for two places to be screwed. Thereby, it is possible to suppress the coiled antenna wiring 120a (see FIG. 12) of the antenna substrate 20a from coming into contact with the substrate mounting portion 20b. Further, the fixing portion 20f of the board mounting portion 20b is fixed to the bottom surface (see FIG. 6) of the housing 16a by a pair of screws 20i.

  The lid member 20c has a concave shape that is recessed toward the arrow X2 direction, and is disposed so as to cover the space surrounded by the wall portion 20e from the concave portion of the lid member 20c from the arrow X2 direction side. The lid member 20c is fixed to the board mounting portion 20b with four screws 20j (see FIG. 10). Thereby, the antenna substrate 20a fixed in the space surrounded by the wall portion 20e is covered with the substrate mounting portion 20b and the lid member 20c, and the space surrounded by the wall portion 20e is isolated from the outside. It is configured to be in the state. In addition, even if the antenna board | substrate 20a is the state covered with the board | substrate attachment part 20b and the cover member 20c because the board | substrate attachment part 20b and the cover member 20c consist of resin, it is R1 / R3 installation part 18 from the antenna board | substrate 20a. Radio waves for reading and writing transmitted toward the side (arrow X1 direction side) and response radio waves transmitted from the IC tag 27 described later are transmitted through the substrate mounting portion 20b and the lid member 20c, It is configured to reach the R1 / R3 installation portion 18 and the antenna substrate 20a.

  Here, in the first embodiment, as shown in FIG. 8, a flat metal plate 22 is attached to the surface of the inner antenna portion 20 on the arrow X1 direction side. The metal plate 22 is fixed at four locations on the flat surface portion 20d by four screws 20k and nuts 20l (see FIG. 10). Thereby, the flat metal plate 22 is attached in a state of being in close contact with the flat surface portion 20d of the substrate attachment portion 20b.

  The metal plate 22 is made of an aluminum plate that can absorb radio waves (reading radio waves, writing radio waves, and response radio waves). Further, as shown in FIG. 9, the metal plate 22 extends in the vertical direction (Z direction) and is formed in a substantially rectangular shape, like the flat surface portion 20d.

  In the first embodiment, a cutout portion 22 a is formed at the approximate center in the horizontal direction (C direction) of the metal plate 22. The notch 22a is cut into an approximately rectangular shape along the vertical direction (Z direction) from the outer end 22b of the metal plate 22 on the arrow Z1 direction side to about 2/3 of the entire length of the metal plate 22 in the Z direction. It is missing and formed. Thereby, the outer end part 22b of the metal plate 22 on the vertically upper side (arrow Z1 direction side) is separated by the notch part 22a. The length L1 in the vertical direction (Z direction) of the notch 22a is configured to be larger than the width W1 in the horizontal direction (C direction) of the notch 22a.

  As shown in FIG. 6, the metal plate 22 is provided in a region between the inner antenna portion 20 and the R3 reagent container 25 of the R1 / R3 installation portion 18. The antenna substrate 20a faces the R1 / R3 installation part 18 side (arrow X1 direction side) through a cutout part 22a (see FIG. 8) cut out in the vertical direction (Z direction) of the metal plate 22. The radio wave for reading and the radio wave for writing on the antenna substrate 20a that does not pass through the notch portion 22a are absorbed by the metal plate 22 while transmitting the radio wave for reading and the radio wave for writing. Further, the horizontal width (C direction) W1 (see FIG. 9) of the notch 22a is configured to be slightly smaller than the horizontal width W2 (see FIG. 9) of the antenna substrate 20a. As a result, the horizontal range of the reading radio wave and the writing radio wave transmitted from the antenna substrate 20a is a range A1 (dashed line). On the other hand, when the metal plate 22 is not provided, the horizontal range of the reading radio wave and the writing radio wave transmitted from the antenna substrate 20a is a range A2 (two-dot chain line) larger than the range A1. That is, the metal plate 22 has a function of limiting a reading range and a writing range by the inner antenna unit 20 (antenna substrate 20a).

  Moreover, the outer side antenna part 21 contains the latching | locking part 21a, the antenna board | substrate 21b, the board | substrate attachment part 21c, and the cover member 21d, as shown in FIGS. The locking portion 21a, the board mounting portion 21c, and the lid member 21d are all made of a resin that can transmit radio waves.

  Further, as shown in FIG. 7, a step 121a is formed toward the inner side (arrow Y1 direction side) at one end (arrow D1 direction side) in the horizontal direction of the locking portion 21a. On the other hand, a step 221a is formed on the other end (arrow D2 direction side) in the horizontal direction of the locking portion 21a toward the outside (arrow Y2 direction side). Thereby, when the locking part 21a is locked to the notch part 116a of the housing 16a, on the arrow D1 direction side, the inner side surface of the housing 16a and the step 121a are arranged to face each other. On the D2 direction side, the outer side surface of the housing 16a and the step 221a are arranged to face each other. As a result, the locking portion 21a is configured to be locked to the housing 16a so as to sandwich the housing 16a from the inside and the outside.

  As shown in FIG. 17, the antenna substrate 21b is configured by forming a coiled antenna wiring 121b on the surface (see FIG. 12) on the arrow Y1 direction side of the plate-like substrate. It is configured to be able to transmit and receive radio waves via the antenna wiring 121b. Also, four screw holes 221b into which four screws 21h (see FIG. 15) described later are inserted are formed in the vicinity of the four corners of the antenna substrate 21b. The coiled antenna wiring 121b is formed inside the screw hole 221b.

  Further, as shown in FIG. 7, the antenna substrate 21b is arranged inside the substrate attachment portion 21c so that the surface of the antenna substrate 21b on the arrow Y1 direction side faces the R2 installation portion 19 side. Thereby, the antenna substrate 21b is configured to be able to transmit the reading radio wave and the writing radio wave toward the R2 installation unit 19 side. The antenna substrate 21b is connected to an antenna switching substrate 17c (see FIG. 3) described later of the RFID module 17.

  As shown in FIGS. 13 and 16, the board mounting portion 21c has a substantially rectangular flat surface portion 21e and a step portion formed toward the arrow Y2 direction side (see FIG. 16) so as to surround the flat surface portion 21e. 21f and a wall portion 21g extending in the arrow Y2 direction from the periphery of the stepped portion 21f are formed. The flat surface portion 21e is formed so as to extend in the vertical direction (Z direction) on the arrow Y1 direction side (see FIG. 16), and the arrow Y1 other than the portion to which the antenna substrate 21b on the surface in the arrow Y2 direction side is attached. It is depressed on the direction side.

  As shown in FIGS. 15 and 16, the antenna substrate 21b is fixed to the surface surrounded by the wall portion 21g on the arrow Y2 direction side of the flat surface portion 21e by four screws 21h and nuts 21i. Thus, the antenna substrate 21b is configured to be fixed in the space surrounded by the wall portion 21g. The antenna substrate 21b is configured not to come into contact with the flat surface portion 21e (recessed portion) other than the portion attached to the flat surface portion 21e when attached to the flat surface portion 21e. Thereby, it is possible to suppress the coiled antenna wiring 121b (see FIG. 17) formed inside the screw hole 221b of the antenna substrate 21b from coming into contact with the substrate mounting portion 21c.

  Further, as shown in FIG. 16, the lid member 21d has a concave shape that is recessed toward the arrow Y2 direction, and covers the space surrounded by the wall portion 21g from the concave portion of the lid member 21d from the arrow Y2 direction side. Are arranged as follows. The lid member 21d is fixed to the locking portion 21a with four screws 21j (see FIG. 15). Thus, the antenna substrate 21b fixed in the space surrounded by the wall portion 21g is covered with the substrate mounting portion 21c and the lid member 21d, and the space surrounded by the wall portion 21g is isolated from the outside. It is configured to be in the state. In addition, even if the antenna substrate 21b is covered with the substrate attachment portion 21c and the lid member 21d because the substrate attachment portion 21c is made of a resin, the antenna substrate 21b is connected to the R2 installation portion 19 side (arrow Y1 direction side). ) And the response radio wave transmitted from the IC tag 28, which will be described later, pass through the board mounting portion 21c and the lid member 21d, and the R2 installation portion 19 and the antenna. It is configured to reach the substrate 21b.

  Moreover, in 1st Embodiment, as shown in FIG. 13, the metal plate 23 is attached to the surface of the arrow direction Y1 side of the outer side antenna part 21. As shown in FIG. Specifically, the metal plate 23 includes a flat surface portion 23a and step portions 23b that are formed at both ends in the horizontal direction (D direction) of the flat surface portion 23a and have substantially the same thickness as the flat surface portion 23a. Yes. Further, the stepped portion 23b of the metal plate 23 is fixed at four locations of the stepped portion 21f of the outer antenna portion 21 by four screws 21k and nuts 21l (see FIG. 15). The metal plate 23 is attached in a state where the flat surface portion 23a is in close contact with the flat surface portion 21e of the substrate attachment portion 21c, and the step portion 23b is in close contact with the step portion 21f of the substrate attachment portion 21c. It is attached with. The metal plate 23 is made of an aluminum plate that can absorb radio waves (reading radio waves, writing radio waves, and response radio waves).

  As shown in FIG. 14, in the first embodiment, a cutout portion 23 c is formed at the approximate center in the horizontal direction (D direction) of the flat surface portion 23 a of the metal plate 23. The cutout portion 23c has a length of about 3/4 of the entire length in the Z direction of the flat surface portion 23a (metal plate 23) from the outer end portion 23d on the arrow Z1 direction side of the flat surface portion 23a along the vertical direction (Z direction). It is cut into a substantially rectangular shape. As a result, the outer end 23d of the metal plate 23 on the arrow Z1 direction side is separated by the notch 23c. Further, the length L2 in the vertical direction (Z direction) of the notch 23c is configured to be larger than the width W3 in the horizontal direction (D direction) of the notch 23c.

  Further, as shown in FIG. 7, the metal plate 23 is provided in a region between the outer antenna portion 21 and the R2 reagent container 26 of the R2 installation portion 19. Further, the antenna substrate 21b is read toward the R2 installation portion 19 side (arrow Y1 direction side) through a cutout portion 23c (see FIG. 13) cut out in the vertical direction (Z direction) of the metal plate 23. The radio wave for reading and the radio wave for writing of the antenna substrate 21b that does not pass through the notch 23c are transmitted by the flat surface portion 23a of the metal plate 23 while transmitting the radio wave for writing and the radio wave for writing. . Further, the horizontal width W3 (see FIG. 14) of the notch 23c is configured to be smaller than the horizontal width W4 (see FIG. 14) of the antenna substrate 21b. As a result, the horizontal range of the reading radio wave and the writing radio wave transmitted from the antenna substrate 21b is a range B1 (dashed line). On the other hand, when the metal plate 23 is not provided, the horizontal range of the reading radio wave and the writing radio wave transmitted from the antenna substrate 21b is a range B2 (two-dot chain line) larger than B1. That is, the metal plate 23 has a function of limiting a reading range and a writing range by the outer antenna portion 21 (antenna substrate 21b).

  Further, as shown in FIG. 5, 25 R1 / R3 holding members 18a made of a resin capable of transmitting radio waves are arranged in the R1 / R3 installation portion 18 at equiangular (about 14.4 degrees) intervals. . Each of the R1 / R3 holding members 18a holds an R1 reagent container 24 that contains an R1 reagent (first reagent) containing a capture antibody and an R3 reagent container 25 that contains an R3 reagent containing a labeled antibody. ing. The R1 / R3 holding member 18a is configured such that the R1 reagent container 24 is held on the outer peripheral side (R2 installation portion 19 side) and the R3 reagent container 25 is held on the inner peripheral side (center O side). Yes.

  In the R2 installation portion 19, 25 R2 holding members 19a made of a resin that can transmit radio waves are arranged at equiangular intervals (about 14.4 degrees). Each of the R2 holding members 19a holds an R2 reagent container 26 that stores an R2 reagent (second reagent) containing magnetic particles. Further, the R1 reagent container 24, the R3 reagent container 25, and the R2 reagent container 26 are configured to be installed and replaced by the user.

  As shown in FIG. 18, the R3 reagent container 25 is formed with a lid 25a that is opened and closed when the R3 reagent is aspirated, and a reagent storage portion 25b that stores the R3 reagent. As shown in FIG. 19, the R2 reagent container 26 is formed with a lid 26a that is opened and closed when the R2 reagent is aspirated, and a reagent storage portion 26b that stores the R2 reagent. 6 and 7, the R1 reagent container 24 has substantially the same shape as the R3 reagent container 25, and the R1 reagent container 24 has a lid that is opened and closed when the R1 reagent is aspirated. 24a and a reagent storage unit (not shown) in which the R1 reagent is stored are formed. The lids 24 a and 25 a are configured to be opened and closed with the rotation of the R1 / R3 installation unit 18, and the lid 26 a is configured to be opened and closed with the rotation of the R2 installation unit 19.

  Further, as shown in FIG. 18, an IC tag attachment portion 25c to which an IC tag 27 is attached to a side surface arranged on the inner peripheral side (arrow X2 direction side in FIG. 6) of the reagent storage portion 25b of the R3 reagent container 25. Is formed. Further, as shown in FIG. 19, an IC tag attachment portion 26c to which the IC tag 28 is attached is provided on the side surface disposed on the outer peripheral side (arrow Y2 direction side in FIG. 7) of the reagent storage portion 26b of the R2 reagent container 26. Is formed. That is, the IC tag 27 of the R3 reagent container 25 is, as shown in FIG. 6, when the R3 reagent container 25 is arranged in the R1 / R3 installation part 18, the inner peripheral side (arrow X2 direction side) of the reagent installation part 16. It is attached so that it faces. Further, as shown in FIG. 7, the IC tag 28 of the R2 reagent container 26 faces the outer peripheral side (arrow Y2 direction side) of the reagent installing unit 16 when the R2 reagent container 26 is arranged in the R2 installing unit 19. Is attached. Unlike the R3 reagent container 25, no IC tag is attached to the side surface of the R1 reagent container 24.

  The IC tag 27 includes the reagent information of the R3 reagent in the R3 reagent container 25 and the reagent information of the R1 reagent in the R1 reagent container 24 held in the R1 / R3 holding member 18a common to the R3 reagent container 25. To be recorded. In addition, the reagent information of the R2 reagent in the R2 reagent container 26 is recorded in the IC tag 28. Specifically, in the IC tags 27 and 28, measurement items, reagent types (type identification information), lot numbers, serial numbers, storage deadlines, filling amounts, remaining amounts, and expiration dates are recorded as reagent information. .

  Further, as shown in FIG. 6, the IC tag 27 of the R3 reagent container 25 is configured to be read and written at a front position (a position facing directly) of the inner antenna unit 20. Similarly, as shown in FIG. 7, the IC tag 28 of the R2 reagent container 26 is configured to be read and written at the front position of the outer antenna portion 21. At this time, the IC tags 27 and 28 transmit response radio waves including reagent information recorded on the IC tags 27 and 28 based on the read radio waves transmitted from the inner antenna unit 20 and the outer antenna unit 21, respectively. Is configured to do. Further, the IC tags 27 and 28 rewrite the recorded reagent information with new reagent information included in the write radio wave based on the write radio wave transmitted from the inner antenna unit 20 and the outer antenna unit 21. It is configured as follows.

  Further, the interval between adjacent R1 / R3 holding members 18a and the interval between adjacent R1 / R3 holding members 18a are set so that reading and writing are not performed on other IC tags 27 when reading and writing are performed on a specific IC tag 27. A range A1 is set. Similarly, an interval and a range between adjacent R2 holding members 19a so that reading and writing are not performed on other IC tags 28 when reading and writing are performed on a specific IC tag 28. B1 is set.

  Further, in the storage unit 4d of the control device 4, as shown in FIG. 3, in addition to the IC tags 27 and 28, 25 R1 reagent containers 24, 25 R3 reagent containers 25 and 25 R2 reagent containers are provided. Each reagent information of 26 is stored individually. The storage unit 4d includes initial positions of the 25 R1 reagent containers 24, the 25 R3 reagent containers 25, and the 25 R2 reagent containers 26, and the R1 / R3 installation unit 18 and the R2 installation unit 19. The rotation angle from each initial position is stored as position information. Thereby, the storage unit 4d stores the positional information and the reagent information of the 25 R1 reagent containers 24, the 25 R3 reagent containers 25, and the 25 R2 reagent containers 26 in association with each other.

  When the power supply (not shown) of the immune analyzer 1 is turned on, the IC tags (ICs) of all the reagent containers (R3 reagent container 25 and R2 reagent container 26) installed in the reagent installing unit 16 by the CPU 2a. The tags 27 and 28) are read, and the position information and reagent information of each reagent container are acquired. In addition, when the reagent information is stored in the storage unit 4d, the CPU 4a of the control device 4 updates the reagent information stored in the storage unit 4d to the reagent information acquired from the IC tag when the power is turned on. It is configured. As a result, while the immune analyzer 1 is powered off, the R1 reagent container 24, the R3 reagent container 25, and the R2 reagent container 26 are replaced with the new R1 reagent container 24, R3 reagent container 25, and R2 reagent container, respectively. Even if it is replaced with 26, the reagent information stored in the storage unit 4d of the control device 4 can be updated to the reagent information of the reagent actually installed in the reagent installation unit 16.

  The RFID module 17 is provided outside the reagent installing unit 16 as shown in FIG. 2, and as shown in FIG. 3, the reader / writer board 17a, and the interface that mediates between the reader / writer board 17a and the CPU 2a. A board 17b and an antenna switching board 17c are included.

  The reader / writer board 17a is configured to transmit a reading radio wave and a writing radio wave in a frequency band of about 13.56 MHz from the inner antenna unit 20 (outer antenna unit 21) based on an instruction from the CPU 2a. . Furthermore, the reader / writer board 17a obtains reagent information from the response radio waves transmitted from the IC tags 27 and 28 in response to the radio waves for reading and received by the inner antenna unit 20 and the outer antenna unit 21, and also transmits the reagent information to the CPU 2a. It is configured to output to.

  The antenna switching board 17c is switched to transmit the reading radio wave and the writing radio wave using either the inner antenna unit 20 or the outer antenna unit 21 based on an instruction from the reader / writer board 17a. It has a function of switching to receive response radio waves using either the inner antenna unit 20 or the outer antenna unit 21.

  Next, with reference to FIGS. 3 and 20, the measurement operation of the immune analyzer 1 (measurement mechanism unit 2) according to the first embodiment of the present invention will be described.

  First, in the CPU 2a of the measurement mechanism unit 2, when the power of the measurement mechanism unit 2 is turned on, the CPU 2a is initialized (program initialization) in step S1, and the operation of each unit of the measurement mechanism unit 2 is performed. An initialization process such as a check is executed.

  Thereafter, in step S2, a reagent information reading process is performed. This reagent information reading process will be described later in detail.

  Thereafter, in step S3, the CPU 2a determines whether or not a measurement instruction is issued by the user. The measurement instruction by the user is transmitted to the CPU 2a via the control device 4 (see FIG. 3). On the other hand, if it is determined that no measurement instruction is given by the user, the process proceeds to step S6.

  If it is determined in step S3 that a measurement instruction has been given by the user, in step S4, the CPU 2a performs reagent aspiration / reagent information writing processing. The reagent aspirating / reagent information writing process will be described in detail later.

  Thereafter, in step S5, the measurement mechanism unit 2 measures the sample. In step S6, the CPU 2a determines whether or not a shutdown instruction has been issued by the user. If it is determined that there is no shutdown instruction, the process returns to step S3. If it is determined that a shutdown instruction has been issued, the measurement mechanism unit 2 is shut down by the CPU 2a in step S7. In this way, the measurement operation of the CPU 2a of the measurement mechanism unit 2 is completed.

  Next, the reagent information reading process of the immune analyzer 1 according to the first embodiment of the present invention shown in step S2 of FIG. 20 will be described in detail with reference to FIGS.

  First, in step S201, the CPU 2a causes the R1 / R3 installation unit 18 (R2 installation unit) so that the IC tag 27 (28) to be read is positioned in a position facing the inner antenna unit 20 (outer antenna unit 21). 19) is rotated in the direction of arrow C1 (D1) or arrow C2 (D2) (see FIGS. 6 and 7). In step S202, the reading radio wave is transmitted from the inner antenna unit 20 (outer antenna unit 21) to the IC tag 27 (28) to be read by the CPU 2a.

  Thereafter, in step S203, whether the inner antenna unit 20 (outer antenna unit 21) has received the response radio wave emitted from the IC tag 27 (28) in response to the radio wave for reading by the CPU 2a within a predetermined time. It is determined whether or not. That is, whether or not the reagent information acquired by the reader / writer board 17a of the RFID module 17 based on the response radio wave received from the inner antenna unit 20 (outer antenna unit 21) by the CPU 2a is output to the CPU 2a within a predetermined time. To be judged. If it is determined that the inner antenna unit 20 (outer antenna unit 21) has not received the response radio wave within a predetermined time, it is determined that the reading has failed, and the CPU 2a causes the control device 4 to Read error information is transmitted. Then, the display unit 4b of the control device 4 displays that the reading of the reagent information of the reagent container located at the predetermined position (reagent information of the reagent container to be read) has failed. Then, the process proceeds to step S206.

  On the other hand, if it is determined that the inner antenna unit 20 (outer antenna unit 21) has received the response radio wave within a predetermined time, the reading target reagent information included in the response radio wave is transmitted to the control device 4 in step S205. Sent. And in the control apparatus 4, the reagent information of the memory | storage part 4d is updated based on the reagent information of the reading object received from CPU2a. Then, the process proceeds to step S206.

  Finally, in step S206, the CPU 2a determines whether or not all of the 25 IC tags 27 and 25 IC tags 28 have been read. If it is determined that reading has not been completed, the process returns to step S201, and a new IC tag is read. If it is determined that all reading has been completed, the reagent information reading process is terminated, and the process proceeds to step S3 shown in FIG.

  Next, the reagent aspiration / reagent information writing process of the immunological analyzer 1 according to the first embodiment of the present invention shown in step S4 of FIG. 20 will be described in detail with reference to FIGS. .

  First, in step S401, the CPU 2a causes the R1 reagent container 24 or R3 reagent container 25 (R2 reagent container 26) to be positioned at the suction position where the R1 reagent or R3 reagent (R2 reagent) is sucked. / R3 installation part 18 (R2 installation part 19) is rotated in the direction of arrow C1 (D1) or arrow C2 (D2) (see FIGS. 6 and 7). At this time, the lid 24a of the R1 reagent container 24 or the lid 25a of the R3 reagent container 25 (the lid 26a of the R2 reagent container 26) is opened with the rotation of the R1 / R3 installation unit 18 (R2 installation unit 19).

  In step S402, the R1 reagent or the R3 reagent (R2 reagent) is aspirated. Thereafter, in step S403, the R1 / R3 installation unit 18 (R2 installation unit) is set so that the IC tag 27 (28) to be written by the CPU 2a is located at a position facing the inner antenna unit 20 (outer antenna unit 21). 19) is rotated in the direction of arrow C1 (D1) or arrow C2 (D2). At this time, the lid 24a of the R1 reagent container 24 or the lid 25a of the R3 reagent container 25 (the lid 26a of the R2 reagent container 26) is closed along with the rotation of the R1 / R3 installation unit 18 (R2 installation unit 19).

  In step S404, the CPU 2a transmits a radio wave for reading from the inner antenna unit 20 (outer antenna unit 21) to the IC tag 27 (28) to be written. Thereafter, in step S405, the CPU 2a determines whether the inner antenna unit 20 (outer antenna unit 21) has received the response radio wave within a predetermined time. If it is determined that the inner antenna unit 20 (outer antenna unit 21) has not received the response radio wave within a predetermined time, the reading error information is transmitted to the control device 4 by the CPU 2a in step S406. 4 displays that the reagent information could not be written to the IC tag to be written. Then, the reagent aspirating / reagent information writing process ends, and the process proceeds to step S5 shown in FIG.

  If it is determined in step S405 that the inner antenna unit 20 (outer antenna unit 21) has received the response radio wave within a predetermined time, in step S407, writing that includes reagent remaining amount information and the like is included. A radio wave is transmitted from the inner antenna unit 20 (outer antenna unit 21) to the IC tag 27 (28) to be written. In step S408, after the same information as the reagent information written in the IC tag 27 (28) to be written is transmitted to the control device 4 by the CPU 2a, the reagent aspiration / reagent information writing process is terminated, Proceed to step S5 shown in FIG. Note that, in the control device 4, the writing target reagent information is updated based on the writing target reagent information transmitted from the CPU 2a.

  In the first embodiment, as described above, the metal plate 22 is provided between the inner antenna unit 20 and the R3 reagent container 25 of the R1 / R3 installation unit 18, and the metal plate 23 is provided with the outer antenna unit 21 and the R2 installation unit. 19 R2 reagent containers 26 were provided. Thereby, it is possible to prevent the inner antenna unit 20 and the outer antenna unit 21 from erroneously reading the reagent information recorded on the IC tag that does not need to read the reagent information. Therefore, it is possible to suppress erroneous reading of reagent information recorded on an IC tag that does not need to be read without securing a large arrangement interval between adjacent R3 reagent containers 25. As a result It is possible to suppress the size of the immune analyzer 1 main body from increasing. Further, by providing the inner antenna unit 20 and the outer antenna unit 21, reagent information recorded on a plurality of IC tags can be acquired in a shorter time.

  Moreover, in 1st Embodiment, while providing the notch part 22a in the approximate center of the horizontal direction (C direction) of the metal plate 22 as mentioned above, it cuts in the approximate center of the horizontal direction (D direction) of the metal plate 23. A notch portion 23c was provided. As a result, unnecessary radio waves can be absorbed by portions other than the cutout portions 22a and 23c of the metal plates 22 and 23, so that the range of radio waves transmitted from the inner antenna portion 20 and the outer antenna portion 21 can be easily reduced. It can be limited to a desired range.

  In the first embodiment, as described above, the notches 22a and 23c are formed so as to extend to the outer ends 22b and 23d on the arrow Z1 direction side, so that the notches 22a and 23c are formed on the metal plate 22. Therefore, the eddy current can be prevented from being generated in the metal plates 22 and 23. Thereby, it can suppress easily that the output of the electromagnetic wave which passes through the notch parts 22a and 23c weakens.

  In the first embodiment, as described above, the vertical length L1 of the notch 22a of the metal plate 22 is configured to be greater than the horizontal width W1, and the metal plate 23 is cut. The vertical length L2 of the notch 23c is configured to be larger than the horizontal width W3. As a result, in a state where the R3 reagent containers 25 and the R2 reagent containers 26 are arranged adjacent to each other in the horizontal direction, the inner antenna unit 20 and the outer antenna unit 21 are removed from the IC tag that does not need to read reagent information. Incorrect reception of radio waves can be suppressed, and the inner antenna unit 20 and the outer antenna unit 21 can erroneously reach radio waves to the IC tags 27 and 28 that do not need to write reagent information. Can be suppressed.

  In the first embodiment, as described above, the inner rotation drive unit 16d for rotating the R1 / R3 installation unit 18 in the directions of the arrow C1 and the arrow C2 and the R2 installation unit 19 in the direction of the arrow D1 and the arrow D2 An outer rotation driving unit 16e for rotating in the direction is provided. Thus, the reagent information stored in the IC tags 27 of the plurality of R3 reagent containers 25 using the inner antenna unit 20 and the outer antenna unit 21, and the reagent information stored in the IC tags 28 of the plurality of R2 reagent containers 26 Can be read reliably.

  In the first embodiment, as described above, the antenna substrate 20a (21b) is fixed to the surface surrounded by the wall portion 20e (21g) on the arrow X2 (Y2) direction side of the substrate mounting portion 20b (21c). At the same time, the metal plate 22 (23) is attached to the surface on the arrow X1 (Y1) direction side of the board attaching portion 20b (21c), thereby the metal plate 22 (23) with respect to the inner antenna portion 20 (outer antenna portion 21). The position of was fixed. Thereby, even when the inner antenna portion 20 (outer antenna portion 21) moves, the relative positional relationship between the metal plate 22 (23) and the inner antenna portion 20 (outer antenna portion 21) does not change. Since there is no need to align each other, reagent information stored in the IC tags 27 of the plurality of R3 reagent containers 25 (IC tags of the plurality of R2 reagent containers 26) using the inner antenna section 20 (outer antenna section 21). The reagent information stored in 28 can be read more reliably.

  In the first embodiment, as described above, the metal plate 22 (23) is attached to the board attachment portion 20b (21c). Thus, in order to prevent radio waves transmitted from the inner antenna unit 20 (outer antenna unit 21) from reaching an IC tag other than the IC tag to be read, a plurality of R3 reagent containers 25 (a plurality of R2 reagent containers) are used. 26) Since it is not necessary to provide the metal plate 22 (23) individually for each, the increase in the number of parts can be suppressed. Furthermore, since the metal plate 22 (23) can be attached and fixed to the board attachment portion 20b (21c), the relative positional relationship between the metal plate 22 (23) and the inner antenna portion 20 (outer antenna portion 21). Can be reliably maintained.

  In the first embodiment, as described above, the metal plate 22 (23) is attached to one side of the board attachment portion 20b (21c), and the antenna board 20a (21b) is attached to the other side of the board attachment portion 20b (21c). By attaching to the metal plate 22, it is possible to prevent the metal plate 22 (23) and the antenna substrate 20 a (21 b) from being unnecessarily (excessively) close to each other. For this reason, it is possible to suppress the function of the metal plate 22 (23) from being impaired due to unnecessary (excessive) proximity between the metal plate 22 (23) and the antenna substrate 20a (21b).

  In the first embodiment, as described above, the substrate mounting portion 20b (21c) and the lid member 20c (21d) are both made of a resin capable of transmitting radio waves, and the antenna substrate 20a (21b) is attached to the antenna substrate 20a (21b). The substrate mounting portion 20b (21c) and the lid member 20c (21d) were covered. Thus, when the reagent is cooled by the fan 16f and the Peltier element 16g, water droplets due to condensation are formed on the antenna substrate 20a (21b) by the substrate mounting portion 20b (21c) and the lid member 20c (21d) covering the antenna substrate 20a (21b). Can be prevented from adhering. Thereby, it is possible to suppress the occurrence of a short circuit in the circuit constituting the antenna substrate 20a (21b) due to water droplets attached to the antenna substrate 20a (21b).

(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS. In the immune analyzer 301 according to the second embodiment, an example in which one antenna unit 330 is provided in the reagent installing unit 316 of the measurement mechanism unit 302 and the metal plate 331 is attached only to one surface of the antenna unit 330 will be described. To do.

  First, the configuration of the immune analyzer 301 according to the second embodiment of the present invention will be described with reference to FIGS.

  In the second embodiment, as shown in FIG. 23, the reagent installing unit 316 is provided with one antenna unit 330. Specifically, as shown in FIGS. 24 and 25, the antenna unit 330 is installed inside the housing 316a on the outer peripheral side (the side opposite to the center O) of the R1 / R3 installation unit 18 and R2 installation. It is provided on the inner peripheral side of the part 19. That is, the antenna unit 330 is disposed so as to be sandwiched between the R1 / R3 installation unit 18 and the R2 installation unit 19 in plan view. Similarly to the first embodiment, the R1 / R3 installation portion 18 formed in a substantially annular shape is provided on the inner peripheral side (center O side) of the R2 installation portion 19 formed in a substantially annular shape. On the other hand, unlike the first embodiment, the housing 316a is not provided with the notch 116a.

  As shown in FIGS. 26 and 27, the antenna unit 330 includes an antenna substrate 330a and a substrate attachment portion 330b that fixes the antenna substrate 330a from the outside (arrow X4 direction side). In addition, the lower portion of the board attachment portion 330b is fixed to the bottom surface of the housing 316a with screws 330c. That is, the antenna unit 330 is fixed to the bottom surface (see FIG. 24) of the housing 316a.

  As shown in FIG. 25, the antenna substrate 330a has a surface on the inner side (arrow X3 direction side) of the antenna substrate 330a facing the R1 / R3 installation portion 18 and a surface on the outer side (arrow X4 direction side) of the antenna substrate 330a. Is disposed inside the substrate mounting portion 330b so as to face the R2 installation portion 19.

  In the second embodiment, the antenna substrate 330a can transmit the radio wave for reading and the radio wave for writing from the surface on the arrow X3 direction side toward the R1 / R3 installation unit 18 side (arrow X3 direction side). The radio wave for reading and the radio wave for writing can be transmitted from the surface on the arrow X4 direction side toward the R2 installation part 19 side (arrow X4 direction side). Yes. The antenna substrate 330a is configured to be able to receive response radio waves transmitted from the IC tags 27 and 28 in response to read radio waves. Thereby, the antenna unit 330 is configured to be able to read and write an IC tag 27 of an R1 reagent container 324 described later arranged on the arrow X3 direction side, and arranged on the arrow X4 direction side. The IC tag 28 of the R2 reagent container 26 can be read and written. Note that the antenna substrate 330 a is connected to the reader / writer substrate 317 a of the RFID module 317.

  The board attachment portion 330b is made of a resin that can transmit radio waves. As a result, the reading radio wave and the writing radio wave transmitted from the surface of the antenna substrate 330a on the arrow X4 direction side toward the R2 installation portion 19 side (arrow X4 direction side), and the response radio wave transmitted from the IC tag 28. Are configured to pass through the board attachment portion 330b and reach the R2 installation portion 19 and the antenna substrate 330a. The antenna substrate 330a is fixed to the substrate attachment portion 330b with screws 330d and nuts 330e.

  Here, in the second embodiment, as shown in FIG. 26, a flat metal plate 331 is attached to the surface of the antenna unit 330 on the arrow X3 direction side. The metal plate 331 is fixed to the board attachment portion 330b with screws 330f and nuts (not shown). The metal plate 331 is made of an aluminum plate that can absorb radio waves (reading radio waves, writing radio waves, and response radio waves). As shown in FIG. 27, the metal plate 331 extends in the vertical direction (Z direction) and is formed in a substantially rectangular shape.

  The metal plate 331 has a notch 331a. The notch 331a is cut into a substantially rectangular shape along the vertical direction (Z direction) from the outer end 331b of the metal plate 331 on the arrow Z1 direction side to about 2/3 of the entire length of the metal plate 331 in the Z direction. It is formed by lacking. Thereby, the outer end 331b of the metal plate 331 on the arrow Z1 direction side is separated by the notch 331a. Further, the vertical length L3 of the notch 331a is configured to be larger than the horizontal width W5 of the notch 331a.

  Moreover, in 2nd Embodiment, as shown in FIG. 25, the flat metal plate 331 is provided in the area | region between the R1 reagent container 324 of the antenna part 330 and R1 / R3 installation part 18. As shown in FIG. Further, the antenna substrate 330a transmits radio waves toward the R1 / R3 installation portion 18 side (arrow X3 direction side) through the cutout portion 331a cut out in the vertical direction (Z direction) of the metal plate 331. On the other hand, the radio wave of the antenna substrate 330 a that does not pass through the notch 331 a is configured to be absorbed by the metal plate 331. Further, the horizontal width W5 (see FIG. 27) of the notch 331a is configured to be slightly smaller than the horizontal width W6 (see FIG. 27) of the antenna substrate 330a. Accordingly, the metal plate 331 limits the horizontal range (range E1 (thick one-dot chain line)) of the radio wave for reading and the radio wave for writing transmitted from the antenna substrate 330a toward the arrow X3 direction side. The antenna unit 330 (antenna substrate 330a) has a function of limiting the reading range and writing range on the arrow X3 direction side.

  On the other hand, a metal plate that restricts the reading range and the writing range is not disposed on the side of the antenna unit 330 in the direction of the arrow X4. Thereby, the horizontal range (range E2 (thick two-dot chain line)) of the radio wave for reading and the radio wave for writing transmitted from the antenna substrate 330a toward the arrow X4 direction side and the antenna substrate 330a from the arrow X4 direction side. The horizontal range of the received response radio wave is not limited. As a result, the horizontal range E1 (thick one-dot chain line) of the reading radio wave and the writing radio wave transmitted from the antenna substrate 330a toward the arrow X3 direction is transmitted from the antenna substrate 330a toward the arrow X4 direction. Smaller than the horizontal range E2 (thick two-dot chain line) of the read radio wave and the write radio wave.

  Further, unlike the first embodiment in which the IC tag 27 is attached to the R3 reagent container 25, in the second embodiment, the IC tag 27 is attached to the arrow X4 direction side of the R1 reagent container 324. The IC tag 27 of the R1 reagent container 324 is attached so as to face the R2 installation part 19 side (arrow X4 direction side) when the R1 reagent container 324 is arranged in the R1 / R3 installation part 18.

  In the second embodiment, since only one antenna unit 330 is provided, the antenna switching board 17c of the first embodiment for switching the antenna unit is not necessary. As shown in FIG. 23, the antenna substrate 330a of the antenna unit 330 is directly connected to the reader / writer substrate 317a.

  The remaining configuration of the second embodiment is the same as that of the first embodiment.

  In the measurement operation of the immune analyzer 301 according to the second embodiment, processes other than the reagent information reading process and the reagent aspirating / reagent information writing process are the same as those in the first embodiment shown in FIG.

  Next, with reference to FIGS. 25 and 28, the reagent information reading process of the immune analyzer 301 according to the second embodiment of the present invention will be described in detail.

  First, in step S201a, the CPU 302a causes the IC tag 27 (28) to be read to be positioned at a position facing the surface of the antenna unit 330 on the arrow X3 direction side (surface on the arrow X4 direction side). The R3 installation part 18 (R2 installation part 19) is rotated in the direction of the arrow C1 (D1) or the arrow C2 (D2) (see FIG. 25). In step S202a, the CPU 302a transmits a reading radio wave from the antenna unit 330 to the IC tag 27 (28) to be read.

  Thereafter, in step S203a, the CPU 302a determines whether or not the antenna unit 330 has received the response radio wave emitted from the IC tag 27 (28) in response to the radio wave for reading within a predetermined time. If it is determined that the antenna unit 330 has not received the response radio wave within a predetermined time, it is determined that the reading has failed, and the reading error information is transmitted to the control device 4 by the CPU 302a in step S204. . Then, the process proceeds to step S206.

  On the other hand, if it is determined that the antenna unit 330 has received the response radio wave within a predetermined time, the reagent information included in the response radio wave received by the antenna unit 330 is read by the CPU 302a in step S205a. It is determined whether or not. The CPU 302a determines whether or not the reagent information is to be read based on the reagent type included in the read reagent information. If it is determined that the reagent information included in the response radio wave is not the reagent information to be read, the process proceeds to step S204 described above. When it is determined that the reagent information included in the response radio wave is the reagent information to be read, the reagent information to be read included in the response radio wave is transmitted to the control device 4 in step S205b. Then, the process proceeds to step S206.

  Finally, in step S206, the CPU 302a determines whether or not all of the 25 IC tags 27 and 25 IC tags 28 have been read. If it is determined that the reading has not been completed, the process returns to step S201a to read a new IC tag. If it is determined that all reading has been completed, the reagent information reading process is terminated, and the process proceeds to step S3 shown in FIG.

  Next, with reference to FIGS. 25 and 29, the reagent aspirating / reagent information writing process of the immune analyzer 301 according to the second embodiment of the present invention will be described in detail.

  First, in step S401, the CPU 302a moves the R1 / R3 installation unit 18 (R2 installation unit 19) to an arrow so that the R1 reagent container 324 or the R3 reagent container 325 (R2 reagent container 26) to be aspirated is positioned at the aspiration position. It is rotated in the C1 (D1) direction or the arrow C2 (D2) direction (see FIG. 25). At this time, the lid 324a of the R1 reagent container 324 or the lid 325a of the R3 reagent container 325 (the lid 26a of the R2 reagent container 26) is opened along with the rotation of the R1 / R3 installation unit 18 (R2 installation unit 19).

  In step S402, the R1 reagent or the R3 reagent (R2 reagent) is aspirated. Thereafter, in step S403a, R1 / R2 is set such that the IC tag 27 (28) to be written by the CPU 302a is located at a position facing the surface on the arrow X3 direction side (surface on the arrow X4 direction side) of the antenna unit 330. The R3 installation part 18 (R2 installation part 19) is rotated in the direction of the arrow C1 (D1) or the arrow C2 (D2). At this time, the lid 324a of the R1 reagent container 324 or the lid 325a of the R3 reagent container 325 (the lid 26a of the R2 reagent container 26) is closed with the rotation of the R1 / R3 installation unit 18 (R2 installation unit 19).

  In step S404a, the CPU 302a transmits a radio wave for reading from the antenna unit 330 to the IC tag 27 (28) to be written. Thereafter, in step S405a, the CPU 302a determines whether or not the antenna unit 330 has received a response radio wave within a predetermined time. If it is determined that the antenna unit 330 has not received the response radio wave within a predetermined time, the read error information is transmitted to the control device 4 by the CPU 302a in step S406 and written on the display unit 4b of the control device 4. A message indicating that reagent information could not be written to the IC tag to be loaded is displayed. Then, the reagent aspirating / reagent information writing process ends, and the process proceeds to step S5 shown in FIG.

  If it is determined in step S405a that the antenna unit 330 has received the response radio wave within a predetermined time, the reagent information included in the response radio wave received by the antenna unit 330 is written by the CPU 302a in step S407a. It is determined whether or not the reagent information is recorded on the IC tag to be included. If it is determined that the reagent information included in the response radio wave is not the reagent information recorded in the IC tag to be written, the process proceeds to step S406 described above. If it is determined in step S407a that the reagent information included in the response radio wave is reagent information recorded in the IC tag to be written, a document including the remaining amount information of the reagent in step S407b. The embedded radio wave is transmitted from the antenna unit 330 to the IC tag 27 (28) to be written. In step S408, after the same information as the reagent information written in the IC tag 27 (28) to be written is transmitted to the control device 4, the reagent aspiration / reagent information writing process is terminated, and FIG. The process proceeds to step S5.

  In the second embodiment, as described above, the antenna unit 330 is disposed so as to be sandwiched between the R1 / R3 installation unit 18 and the R2 installation unit 19 in a plan view, and is a flat metal plate. 331 is provided between the antenna unit 330 and the R1 reagent container 324 of the R1 / R3 installation unit 18. As a result, the range of the radio wave transmitted from the antenna unit 330 can be limited to a desired range by the metal plate 331, so that the antenna unit 330 transmits the IC tag that does not need to read reagent information. It is possible to prevent the received radio waves from reaching by mistake. Moreover, since the antenna part 330 for reading the reagent information recorded on the IC tags 27 and 28 can be shared, it is possible to suppress an increase in the number of parts.

  In the second embodiment, as described above, the R1 / R3 installation portion 18 formed in a substantially annular shape is provided on the inner peripheral side of the R2 installation portion 19 formed in a substantially annular shape, and has a flat plate shape. The metal plate 331 is provided between the antenna unit 330 and the R1 reagent container 324 of the R1 / R3 installation unit 18. Accordingly, when the IC tags 27 that are close to each other are read, it is possible to prevent the radio waves transmitted from the antenna unit 330 from erroneously reaching the IC tags that do not need to read reagent information. .

  The remaining effects of the second embodiment are similar to those of the first embodiment.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the first and second embodiments, the sample analyzer of the present invention is applied to the immune analyzer 1 (301). However, the present invention is not limited to this. The present invention can be applied to any device provided with an antenna unit used for reading reagent information of an electronic tag. In addition to an immune analyzer, the present invention can be applied to a blood coagulation analyzer, a urine sample measurement device, a gene amplification detection device and the like Is also applicable.

  In the first and second embodiments, the metal plates 22 and 23 (331) (restricting member) are aluminum plate members that can absorb radio waves (reading radio waves, writing radio waves, and response radio waves). Although the example which consists of is shown, this invention is not limited to this. In the present invention, the limiting member may be composed of a metal member other than aluminum, or may be composed of a metal member and a non-metal member. The limiting member may not include a metal member as long as it can limit radio waves.

  In the first and second embodiments, the metal plates 22 and 23 (331) have notches 22a and 23c (331a) (gap) extending to the outer ends 22b and 23d (331b) on the arrow Z1 direction side. However, the present invention is not limited to this. In the present invention, the shape of the cutout portion of the metal plate is not particularly limited. For example, a notch (gap) extending to both outer ends in the vertical direction (Z direction) may be formed. Moreover, you may form so that a notch part (gap) may extend to the outer end part of a horizontal direction. Further, the notch (gap) may be formed in a curved shape such as a substantially S shape.

  In the first and second embodiments, the example in which the notches 22a and 23c (331a) (gap) are formed in the metal plates 22 and 23 (331) has been shown, but the present invention is not limited to this. . In the present invention, the metal plate need not be provided with a notch. For example, a hole that is not connected to the outer end may be provided as a gap in the metal plate.

  Further, in the first and second embodiments, the metal plates 22 and 23 (331) are replaced with the board attaching part 20b of the inner antenna part 20 and the board attaching part 21c of the outer antenna part 21 (the board attaching part 330b of the antenna part 330). However, the present invention is not limited to this. In the present invention, the metal plate may be fixed to any one of a housing, a reagent container holding part, a reagent container holding member, a reagent container, and the like without being fixed to the antenna part.

  In the first and second embodiments, the horizontal width W1 (W5) of the notch 22a (331a) is slightly smaller than the horizontal width W2 (W6) of the antenna substrate 20a (330a). Further, in the first embodiment, the horizontal width W3 of the notch 23c is shown to be smaller than the horizontal width W4 of the antenna substrate 21b. The invention is not limited to this. In the present invention, as long as it is possible to limit the range of radio waves transmitted from the antenna unit, the horizontal width of the notch portion may be substantially the same as the horizontal width of the antenna substrate. It may be larger than the horizontal width of the substrate.

  In the second embodiment, the antenna unit 330 is disposed so as to be sandwiched between the R1 / R3 installation unit 18 and the R2 installation unit 19 in a plan view. It is not limited to this. For example, the antenna unit may be disposed on the opposite side (inner peripheral side) of the R1 / R3 installation unit from the R2 installation unit, or the antenna unit may be disposed on the opposite side (outer peripheral side) of the R1 / R3 installation unit. ).

  In the second embodiment, the example in which the metal plate 331 is provided in the region between the antenna unit 330 and the R1 reagent container 324 of the R1 / R3 installation unit 18 is shown, but the present invention is not limited to this. . In the present invention, the metal plate may be provided not in a region between the antenna unit and the R1 reagent container in the R1 / R3 installation unit but in a region between the antenna unit and the R2 reagent container in the R2 installation unit. Moreover, you may provide a metal plate in both the area | region between the antenna part and R1 reagent container of R1 / R3 installation part, and the area | region between antenna part and R2 reagent container of R2 installation part.

  Moreover, in the said 1st and 2nd embodiment, although the R1 / R3 installation part 18 and the R2 installation part 19 were provided in the substantially annular | circular shape, this invention is not limited to this. For example, the R1 / R3 installation part and the R2 installation part may be provided so as to extend linearly in a predetermined direction in a state where they are arranged in parallel.

  In the first and second embodiments, an example in which 25 R1 reagent containers 24, 25 R3 reagent containers 25, and 25 R2 reagent containers 26 are provided has been described. It is not limited to this. In the present invention, the number of each of the R1 reagent container, the R3 reagent container, and the R2 reagent container may be different. Further, the number of R1 reagent containers (R3 reagent container, R2 reagent container) may be other than 25. For example, only one R1 reagent container, R3 reagent container, and R2 reagent container may be provided.

  In the first and second embodiments, the R1 / R3 installation unit 18 and the R2 installation unit 19 are rotated by the inner rotation driving unit 16d and the outer rotation driving unit 16e, respectively. It is not limited to this. In the present invention, the antenna unit may be rotated by providing a driving unit for rotating the antenna unit while the R1 / R3 installation unit and the R2 installation unit are configured not to rotate.

  In the first and second embodiments, the example in which the metal plates 22 and 23 (metal plate 331) are attached to the inner antenna portion 20 and the outer antenna portion 21 (antenna portion 330) has been described. Is not limited to this. In the present invention, the antenna unit may include a metal plate. In this case, you may arrange | position a metal plate (restriction member) between the board | substrate attachment part of an antenna part, and an antenna board | substrate. For example, a metal plate (restricting member) may be attached to the surface of the substrate attachment portion on the antenna substrate side. Moreover, you may restrict | limit the range of the electromagnetic wave transmitted to an electronic tag from an antenna board | substrate by changing the shape of an antenna board | substrate, without providing a metal plate (restriction member). For example, you may restrict | limit the range of the electromagnetic wave transmitted from an antenna board | substrate by forming an antenna board | substrate in a curved surface.

DESCRIPTION OF SYMBOLS 1,301 Immunoassay apparatus 16a Housing | casing 16b Cover part 16d Inner rotation drive part 16e Outer rotation drive part 16f Fan 16g Peltier element 18 R1 / R3 installation part 19 R2 installation part 20 Inner antenna part 20a, 21b, 330a Antenna board 20b, 21c, 330b Substrate attachment part 20c, 21d Lid member 21 Outer antenna part 22, 23, 331 Metal plate 22a, 23c, 331a Notch part 22b, 23d, 331b Outer end part 25 R3 reagent container 26 R2 reagent container 27, 28 IC Tag 324 R1 reagent container 330 antenna part

Claims (7)

A sample analyzer for analyzing a sample using a reagent in a reagent container,
A reagent container holding unit for holding a plurality of reagent containers with an electronic tag in which reagent information related to the reagent is recorded;
An antenna unit for transmitting radio waves to the electronic tag;
A limiting member that is provided between the electronic tag and the antenna unit and limits a range of radio waves transmitted from the antenna unit;
The limiting member includes a metal member provided so as to have a gap for allowing the radio wave transmitted from the antenna unit to pass through, and to block between the electronic tag and the antenna unit,
The gap is Ri Do from the notches formed so as to extend to the end of the metallic member, the metallic member, the plurality of reagent containers, wherein the antenna portion and directly opposite the single of the reagent container The radio wave is allowed to pass between the electronic tag and the antenna unit through the gap, and the radio wave is blocked between the electronic tag and the antenna unit of another reagent container that does not face the antenna unit. Has been
A drive unit that moves at least one of the reagent container holding unit and the antenna unit;
The sample analysis apparatus , wherein the restriction member is fixed in position with respect to the antenna unit .   The sample analyzer according to claim 1, wherein a vertical length of the gap is larger than a horizontal length of the gap. The antenna unit includes an antenna substrate for transmitting radio waves, and an antenna holding unit for holding the antenna substrate,
Wherein the restriction member is attached to the antenna holding portion, the sample analyzer according to claim 1 or 2. A storage section for storing the reagent container holding section and the antenna section;
A cooling unit for cooling the reagent,
The sample analyzer according to claim 3 , wherein the antenna holding unit is disposed so as to cover the antenna substrate while allowing radio waves to pass therethrough. The plurality of reagent containers include a plurality of first reagent containers attached with a first electronic tag and a plurality of second reagent containers attached with a second electronic tag,
The reagent container holding unit includes a first reagent container holding unit that holds the plurality of first reagent containers and a second reagent container holding unit that holds the plurality of second reagent containers,
The antenna unit includes a first antenna unit for transmitting radio waves to the first electronic tag, and a second antenna unit for transmitting radio waves to the second electronic tag,
The restriction member includes a first restriction member provided between the first electronic tag and the first antenna portion, and a second restriction provided between the second electronic tag and the second antenna portion. The sample analyzer according to any one of claims 1 to 4 , comprising a member. The plurality of reagent containers include a first reagent container to which a first electronic tag is attached and a second reagent container to which a second electronic tag is attached,
The reagent container holding part includes a first reagent container holding part for holding the first reagent container and a second reagent container holding part for holding the second reagent container,
The antenna unit is disposed between the first reagent container holding unit and the second reagent container holding unit,
The said restriction | limiting member is provided in at least any one between the said 1st electronic tag and the said antenna part, and between the said 2nd electronic tag and the said antenna part, The any one of Claims 1-4 The sample analyzer according to item. The first reagent container holding portion is formed in a substantially annular shape when seen in a plan view, holds a plurality of the first reagent containers,
The second reagent container holding part is formed in a substantially annular shape on the inner peripheral side of the first reagent container holding part in a plan view, and holds a plurality of the second reagent containers,
The sample analyzer according to claim 6 , wherein the restriction member is provided between a second electronic tag attached to a second reagent container of the second reagent container holding unit and the antenna unit.

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